Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 15% when planning your travel around this day of the week.
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 50% on flights from Heathrow to Allentown compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £358. For sooner than that we have options available in the next 3 days from £440.
The best pricing can be found in the month of March. Prices to Allentown from Heathrow average £303. You can even find prices in March for less than £303, as users have found deals to Allentown from as low as £222. The month of July appears to be one of the more expensive times to travel to Allentown from Heathrow. Flying in the targeted month can save you up to 38%.
When flying from Heathrow to Allentown, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Heathrow and Lehigh Valley for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
United Airlines is one of the carriers that may have flexible change policies. You can use our site to filter for other airlines that may also have this kind of flexibility.
Days when direct flights are available for this flight are: Saturday.
In Heathrow, there will be less rainfall in Heathrow compared to Lehigh Valley over the next 22 days.
Expect the weather to be around 30 °C on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Lehigh Valley is generally hotter than in Heathrow.